A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Optimal design of viscous dampers for multi-mode vibration control of bridge cables
AbstractViscous dampers have been widely used for mitigating rain–wind-induced vibration of bridge stay cables. Designing a damper with optimal damping in a specific mode may leave the cable susceptible to vibration in other modes, and it is almost impossible to specify a priori the dominant mode in which optimal performance should be achieved. In the present paper, a new method for optimal design of viscous dampers to achieve multi-mode cable vibration control is developed. With reference to a cable–damper model taking into account cable sag, inclination and bending stiffness, a method to determine the optimal damper size for cable vibration control in assigned multiple modes is proposed based on optimal LQG control theory. The system damping ratios obtained from the proposed strategy are thus found to satisfy the Irwin’s criterion for all the assigned modes. Case studies of prototype cables on a real cable-stayed bridge which experienced rain–wind-induced oscillation show the efficiency of the proposed method.
Optimal design of viscous dampers for multi-mode vibration control of bridge cables
AbstractViscous dampers have been widely used for mitigating rain–wind-induced vibration of bridge stay cables. Designing a damper with optimal damping in a specific mode may leave the cable susceptible to vibration in other modes, and it is almost impossible to specify a priori the dominant mode in which optimal performance should be achieved. In the present paper, a new method for optimal design of viscous dampers to achieve multi-mode cable vibration control is developed. With reference to a cable–damper model taking into account cable sag, inclination and bending stiffness, a method to determine the optimal damper size for cable vibration control in assigned multiple modes is proposed based on optimal LQG control theory. The system damping ratios obtained from the proposed strategy are thus found to satisfy the Irwin’s criterion for all the assigned modes. Case studies of prototype cables on a real cable-stayed bridge which experienced rain–wind-induced oscillation show the efficiency of the proposed method.
Optimal design of viscous dampers for multi-mode vibration control of bridge cables
Wang, X.Y. (author) / Ni, Y.Q. (author) / Ko, J.M. (author) / Chen, Z.Q. (author)
Engineering Structures ; 27 ; 792-800
2004-12-23
9 pages
Article (Journal)
Electronic Resource
English
Passive control for parametric vibration of cables using viscous fluid dampers
| British Library Online Contents | 2007
ERRATUM - Design of Mechanical Viscous Dampers for Stay Cables
| Online Contents | 2000
TECHNICAL PAPERS - Design of Mechanical Viscous Dampers for Stay Cables
| Online Contents | 2000
VISCOUS FLUID FOR VIBRATION CONTROL DAMPERS, AND VIBRATION CONTROL DAMPER
| European Patent Office | 2024
Energy based optimization of viscous-friction dampers on cables
| British Library Online Contents | 2010